C# Discussion Boards - CodeProject

RRLCoder wrote:
I can get the process id but can't get the handle

Can you post a SMALL examle that reproduces this problem?

Bastard Programmer from Hell Suspicious | :suss:

If you can't read my code, try converting it here[^]

This is a bit long but shows most of what i've tried

//typical prcess start
	string ProcToStart = "iexplore";
	int saveProcId;
	
	Process myProcess = new Process();
	myProcess.StartInfo.FileName = TargetFile;
	myProcess.StartInfo.Arguments = TargetArguments;
    	myProcess.StartInfo.UseShellExecute = true;  //seems to make no difference
	myProcess.Start();
	saveProcId = myProcess.Id;
		
1-the simple approach, just trying to access myProcess.MainWindowHandle gets 0 even after a 10 min sleep

2--here is one method looping through all processes
I also tried this wraped in:  while (proc.MainWindowHandle == IntPtr.Zero) (ran forever & didnt find a hit)....
    foreach (Process proc in Process.GetProcesses())
    {
        if (proc.Id == saveProcId)
        { 
	    Console.WriteLine(" PID: " + proc.Id + "    Handle:  " + proc.MainWindowHandle);
	}
    }

3--Here is another attempt using ....GetProcessById
		try
		{
			ChosenProc = Process.GetProcessById(ProcId);
			Console.WriteLine("Your Process Info: " );
			Console.WriteLine("  Id: " + ChosenProc.Id
				+ "  Handle: " + ChosenProc.Handle
				+ "  MainWinHndl: " + ChosenProc.MainWindowHandle
				+ "  Name: " + ChosenProc.ProcessName);
			return true;
		}
		catch
		{
			ChosenProc = null;
			Console.WriteLine("Incorrect entry.");
			return false;
		}

RRLCoder wrote:
This is a bit long but shows most of what i've tried

InvalidOperationException? Try using the full path to the application;

C#

Process myProcess = new Process();
myProcess.StartInfo.FileName = @"C:\Program Files\Internet Explorer\iexplore.exe";
myProcess.StartInfo.Arguments = @"http://www.codeproject.com";
myProcess.Start();
Console.WriteLine(myProcess.Id);
Console.ReadLine();

Bastard Programmer from Hell Suspicious | :suss:

If you can't read my code, try converting it here[^]

Thanks...
I just tried it both ways (fully qualified and just the iexplore) followed by:
Console.WriteLine("IE Instance started... PID= " + myProc.Id + myProc.MainWindowHandle);
I get an unhandled exception on the myProcess.MainWindowHandle no matter how much of a sleep or if i loop looking for the process id. Again, it works find if there is only 1 instance of the target app (iexplor in this case) open.

I run an indoor sports facility.
Our receptionist uses some media player for background music in our foyer.

What I need is a way to mute that media player, to play my own .wav file to remind players to be ready 10 minutes before events start, (triggered by system time) then resume the background media player.
If that makes sense?

My application is in C# and uses AXVLC.
Im also considering making it a Service instead, so the receptionist doesnt close it.

Uhm what is your question, does it make sense, yes. There aeems to be plenty of support for this process on Google.

I would not make it a service, what happens if you want to interrupt the announcement or make an adhoc announcement. You actually need a PA system and should probably look around for a package before attempting to build your own (this assumes you are into running the sports centre and are not a developer).

Never underestimate the power of human stupidity
RAH

I've been a hobbyist developer for much longer than I've been working at the centre. But theyve just made me a manager, so now looking at making some cool new toys. We've got a PA system, but I want to make things as automated as possible as Im getting busy doing other things.

el_stupey wrote:
Im also considering making it a Service instead, so the receptionist doesnt close it.

That's not what a service is for; and yes, the user can close services. Using services also introduces a new problem - they usually run under a system-account, and should not be messing with the users' desk.

Simplest solution; get a list of MP3's to play. Play them yourself (from code), then it becomes quite easy to interrupt the song at a predefined time and to play "something else".

Bastard Programmer from Hell Suspicious | :suss:

If you can't read my code, try converting it here[^]

Maybe a service isnt what I need. Was just a thought.

Thanks for the suggestion, I might try that out.

Also found another answer here. Only problem with that is it claims win7 and later which means finally upgrade from vista.

how to edit in crystal report

Reports are effectively read-only views of your data and should not be used for editing the data

=========================================================
I'm an optoholic - my glass is always half full of vodka.
=========================================================

Edit what exactly? The criteria?
Can you edit your question please, it isn't clear.

PB 369,783 wrote:
I just find him very unlikeable, and I think the way he looks like a prettier version of his Mum is very disturbing.[^]

No, you can't. If you want to display dynamic data, use parameter, query, etc.,

thatraja

Code converters | Education Needed | Improve Everything^New

IIRC you can add comments to a report, not the same as editing which is not possible.

I might be completely wrong as I have not used that pile of crap for over a decade. One of the worst apps even inflicted on the development community.

Never underestimate the power of human stupidity
RAH

What do you mean exactly ?
Usually you work from a template and assign data to it, either by passing parameters so the report generates itself or by passing a datasource.

So do you want to change the template or the generated report itself.
In case of the former, to do it properly you'll need the crystal reports editor application (VS is limited).
In case of the latter, please define better what you want to achieve, because that's not entirely the purpose of Crystal Reports.

V.

(MQOTD rules and previous solutions)

i have developed a small win apps which is suppose to capture skype conversation. my main concern is that i have define the

C#

WndProc()

here is the code a bit

C#

protected override void WndProc(ref Message m)
{
    Boolean handled = false;
    if (m.Msg == NativeCalls.APIAttach && (uint) m.LParam == NativeCalls.SKYPECONTROLAPI_ATTACH_SUCCESS)
    {
        // Get the current handle to the Skype window
        NativeCalls.HWND_BROADCAST = m.WParam;
        handled = true;
        m.Result = new IntPtr(1);
    }

    // Skype sends our program messages using WM_COPYDATA. the data is in lParam
    if (m.Msg == NativeCalls.WM_COPYDATA && m.WParam == NativeCalls.HWND_BROADCAST)
    {
        COPYDATASTRUCT data = (COPYDATASTRUCT)Marshal.PtrToStructure(m.LParam, typeof(COPYDATASTRUCT));
        StatusTextBox.Items.Add(data.lpData + Environment.NewLine);

        // Check for connection
        //if (data.lpData.IndexOf("CONNSTATUS ONLINE") > -1)
        // ConnectButton.IsEnabled = false;

        // Check for calls
        IsCallInProgress(data.lpData);
        handled = true;
        m.Result = new IntPtr(1);
    }

    m.Result = IntPtr.Zero;
    if (handled) DefWndProc(ref m); else base.WndProc(ref m);
    //base.WndProc(ref m);
}

but controls is not coming in this

C#

if (m.Msg == NativeCalls.WM_COPYDATA && m.WParam == NativeCalls.HWND_BROADCAST)

block that is main problem.

SQL

here i attach the link of my win application and that is https://onedrive.live.com/#cid=C4A6F16F34D7540A&id=C4A6F16F34D7540A!126 just download the skypecalltest and run it.

before run my apps just login to skype and then run my apps where you put a phone no and click on call button then you can see the controls is not coming repeatedly to the second if block.

so what i need to change in my code as a result control will come to second if block repeatedly .

in the same link there is another same kind of apps which is based on wpf and that is working where wndproc is calling repeatedly. if possible check that code too and guide me what i am missing or making mistake. thanks

tbhattacharjee

Tridip Bhattacharjee wrote:
i have developed a small win apps

Like this[^] one? Smile | :)

Did the application connect to skype? Does the demo from that website work?

Bastard Programmer from Hell Suspicious | :suss:

If you can't read my code, try converting it here[^]

i develop my win apps following that application whose link you refer but that application is wpf based apps and working fine but my one is not working properly. if possible please download my apps from this link and run at your end to capture the problem. here is link from https://onedrive.live.com/#cid=C4A6F16F34D7540A&id=C4A6F16F34D7540A!126 just download the skypecalltest and run it and definitely notice that WndProc() function is calling repeatedly for getting message from Skype.

tbhattacharjee

Tridip Bhattacharjee wrote:
i develop my win apps following that application whose link you refer but that application is wpf based apps and working fine but my one is not working
properly

A Windows Forms application? Try running it as an admin Smile | :)

Tridip Bhattacharjee wrote:
if possible please download my apps

I'm not going to download a complete project, especially not one that hooks into my Skype. You might want to add in some code that logs *each* WM_BROADCAST and each WM_COPYDATA going trough the WndProc; see if they get called.

Bastard Programmer from Hell Suspicious | :suss:

If you can't read my code, try converting it here[^]

you asked me to log WM_BROADCAST and each WM_COPYDATA that is the main problem because when i run my apps then controls only come to this if block only once

C#

if (m.Msg == NativeCalls.WM_COPYDATA && m.WParam == NativeCalls.HWND_BROADCAST)

so i think if try to log WM_BROADCAST and WM_COPYDATA then only once it will be logged. any better idea?

tbhattacharjee

Does it stop painting the form after that message is received?

if (handled) DefWndProc(ref m); else base.WndProc(ref m);

Why is the DefWndProc there?

Bastard Programmer from Hell Suspicious | :suss:

If you can't read my code, try converting it here[^]

i am not trying to paint my form. i am trying to receive message from skype window. if i write only

C#

base.WndProc(ref m);

then also same thing happen.

tbhattacharjee

Tridip Bhattacharjee wrote:
i am not trying to paint my form

I know; Windows tries that - it's the fastest way of checking whether the handler is still processing messages.

Did you try to run it as an admin? I can imagine UAC blocking the broadcast Smile | :)

Bastard Programmer from Hell Suspicious | :suss:

If you can't read my code, try converting it here[^]

yes i run apps as admin but problem still exist. thanks

tbhattacharjee

Hello EveryOne
, i m getting the inforamtion of SelectAllUser from DB and shown it into DATAGRIDVIEW , now i want to edit perticuler coulm of DGV after editing the desired value should be updated .how it will done i dont know ,any HELP WILL BE appreciated...

Here is code

private void cbxUserStatus_SelectedIndexChanged(object sender, EventArgs e)
{
if (cbxUserStatus.SelectedIndex==0)
{
string constr = ConfigurationManager.ConnectionStrings["RegistrationDB"].ConnectionString;
SqlConnection objcon = new SqlConnection(constr);
SqlDataAdapter da = new SqlDataAdapter("select * from tblRegistration where tblRegistration.userSta='1'", objcon);
DataTable dt = new DataTable();
da.Fill(dt);
dgvRegistration.DataSource = dt;
dgvRegistration.Show();
}
}

Note : please be precise while code as i m new to coding . |Code should be simple and fully functional

mubasit sultan